3 sound good but for wont hurt.and u cant have whatever u want because some corals and fish dont live together in harmony.corals hjave different aggressiveness levels and will even eat each other.and fish will eat certain corals too...a peice of advice dont buy anything till u read up on it u can know about soft corals in general but all soft corals have certain needs that need to be meet like placement,lighting,spacing,tankmates and current also food wow that was alot didnt mean to lecture u so that should help and good luck with the lighting